The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21917-04 |
| Category | Guides |
| Inner Diameter | 25.3 mm |
| Outer Diameter | 44.2 mm |
| Length | 145 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Guide sleeve 25.3/44.2/145, Öhlins part number 21917-04. A worn bushing lets the shaft move off centre, and the seal is the next thing to fail.
Key Features
- Öhlins part number 21917-04
- Length 145 mm
- Original Öhlins service part
- Outer Diameter 44.2 mm
- Inner Diameter 25.3 mm
Where It Sits
At 25.3 mm, 44.2 mm, 145 mm it fits one position only; the next size up carries a different number. Both diameters and the length are specification, not approximation. Both diameters and the length are specification rather than approximation. Inner and outer diameter both matter; a bushing that is a little loose does more damage than none at all.
Why the Original
A damper that can be rebuilt is a damper that stays on the bike; that is the whole argument for original service parts. Buying the individual part rather than a complete assembly is what makes servicing an Öhlins unit worthwhile. Service parts are ordered per piece unless stated otherwise. If the unit is already apart, compare the published dimensions with the part in your hand.
Getting the Number Right
If the unit is already open, compare the dimensions below with the part in your hand before ordering 21917-04. Öhlins states inner diameter 25.3 mm, outer diameter 44.2 mm, length 145 mm for this number, and those figures are the deciding ones. Sleeves position parts axially and often set the preload on a stack. Öhlins uses PTFE-coated bushings for a low breakaway force.
Fitting and Setup Service
If you would rather not open the damper yourself, we can do it — we are an authorised Öhlins service centre and rebuild these units as a matter of routine.
Specifications
- Brand: Öhlins
- Part Number: 21917-04
- Category: Guides
- Inner Diameter: 25.3 mm
- Outer Diameter: 44.2 mm
- Length: 145 mm
- Country of Origin: Sweden
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